Method of rewinding paper core waste



Nov. 11, 1952 M. c. WHATMORE METHOD OF REWINDING PAPER CORE WASTE Filed Feb. 27, 1952 1 IN V EN TOR. mwkw/v. W/M/m wfis Patented Nov. 11, 1952 UNITED STATES ossiea METHOD OF REWINDING PAPER CORE WASTE 1 Claim.

This invention relates to a method of utilizing the paper that remains unwound on the core of a supply roll after the bulk of the paper has been run into a printing press.

Heretofore the paper remaining on the core of a spent roll has customarily been stripped from the core and discarded as waste, or the core with the remainder of the paper thereon is removed from the supply reel and taken to a rewinding machine where the paper is spliced to a roll so as to salvage the part that might otherwise be waste. This involves considerable handling and loss of time. The principal object of my invention is to provide a method that eliminates any waste of paper and that avoids the necessity of a separate rewinding operation.

According to the present invention unwound paper remaining on the core of a spent or expired supply roll is spliced to the paper on a fresh supply roll while the roll are in position on the reel and without removing any of them from the reel.

One form of apparatus suitable to the practice of the method is illustrated somewhat diagrammatically in the drawings in which:

Figure 1 is a representation of a conventional three armed reel or spider for holding rolls of paper positioned as in the first stage of the method; and,

Figure 2 is a similar view showing the rolls positioned as in the second stage of the method.

A form of apparatus that may be employed in carrying out the invention comprises a stand or frame In that supports the rotary shaft II of the reel or spider I2 on which the rolls of paper I3, I4, and I5 are mounted. The reel or spider generally has three sets of arms, each set being adapted to hold the core of a roll of paper.

In the position of the reel I2 shown in Figure 1, the web of paper I6 is indicated as running to the press (not shown) from the roll I3, which roll is almost unwound.

The reel is then partly rotated in clockwise direction, as shown in Figure 2, to bring a fresh roll of paper I4 into the position previously 00- cupied by roll I3, and to bring the latter roll into 2 the position formerly held by the extra supply roll I5. When the rolls are in that position the free end of the paper on roll Ill is spliced, in any known manner, to the paper It that runs to the press.

According to the present invention, the free end of the paper I? that is left on roll it is spliced, as in iii, to the paper on the supply roll I5. Splicing may be effected by use of mill pasters or it may be done in any known manner. After the end of the paper left on the core of roll I3 has been spliced to the paper of roll I5, the latter is rotated clockwise to unwind the remainder of the paper from roll I3, onto roll I5.

Each time the paper on the active roll has been substantially unwound, the portion thereof that is left can be rewound onto a full fresh supply roll, by repeating the cycle of operations hereinbefore described. In this manner all of the paper left on the core of an expired roll may be fully utilized without removing the core from the reel or spider on which it is carried:

What I claim is:

A method of utilizing the paper that remains unwound on the core of a supply roll of printing paper, which method comprises intermittently moving a succession of supply rolls about a common axis into position that a web of paper may be fed from each roll in turn to a printing press, then, after the bulk of paper has been unwound from the core of the first roll, simultaneously moving the core of said roll with the unwound remainder of paper thereon out of feeding position, moving a fresh roll of paper into feeding position, and moving a spare roll of paper into position to replace said fresh roll after that roll has been substantially spent, then splicing the end of the unwound portion of paper remaining on the core of the first supply roll to the paper on the spare supply roll, and finally rotating said spare supply roll about its own axis to wind the remainder of the paper from the core of the spent roll onto the spare roll.

MARVIN C. WHATMORE.

No references cited. 

